Characteristics | Unadjusted OR (95%CI) | P | Adjusted OR (95%CI) | P |
---|---|---|---|---|
Maternal age (y) | 1.11 (1.07-1.14) | <0.001 | 1.09(1.05-1.13) | <0.001 |
Height (cm) | 0.92(0.90-0.95) | <0.001 | 0.91 (0.88-0.93) | <0.001 |
Uterine height (cm) | 1.17 (1.11-1.22) | <0.001 | 1.07 (1.00-1.13) | 0.038 |
Abdominal circumference (cm) | 1.07 (1.05-1.08) | <0.001 | 1.05 (1.03-1.08) | <0.001 |
Estimated fetal weight (100 g) | 1.14 (1.09-1.19) | <0.001 | 1.06 (1.01-1.12) | 0.013 |
Initial station | Â | <0.001 | Â | <0.001 |
 -1 or 0 (2 points) | Ref |  | Ref |  |
 -2 (1 points) | 1.58 (0.57-4.40) |  | 1.26(0.44-3.62) |  |
 -3 (0 points) | 2.97 (1.06-8.32) |  | 1.96(0.68-5.68) |  |
Initial cervical effacement (%) | Â | <0.001 | Â | 0.046 |
 ≥ 80 (3 points) | Ref |  | Ref |  |
 60-70 (2 points) | 2.59 (1.43-4.70) |  | 1.79 (0.97-3.31) |  |
 40-50 (1 points) | 3.63 (1.94-6.78) |  | 2.19 (1.14-4.21) |  |
 0-30 (0 points) | 26.00 (3.96-170.64) |  | 9.23 (1.26-67.56) |  |
Initial cervical consistency | Â | <0.001 | Â | 0.006 |
 Soft (2 points) | Ref |  | Ref |  |
 Firm (0 points) | 2.26 (1.07-4.80) |  | 2.33 (1.06-5.11) |  |
 Medium (1 points) | 1.67 (1.34-2.09) |  | 1.45 (1.14-1.83) |  |
Indications for induction of labor | Â | <0.001 | Â | <0.001 |
 PROM | Ref |  | Ref |  |
 Late term (41 weeks or greater) | 1.76 (1.36-2.28) |  | 1.58 (1.20-2.08) |  |
 Diabetes mellitus | 1.35 (0.99-1.86) |  | 1.03 (0.73-1.44) |  |
 Hypertensive disorder of pregnancy | 3.42 (2.05-5.72) |  | 2.38 (1.38-4.13) |  |
 Others | 1.18 (0.80-1.75) |  | 1.22 (0.81-1.85) |  |